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By Eman Yazdchi, Esq. · Certified Specialist in Workers' Compensation Law, State Bar of California Board of Legal Specialization
In California, Labor Code §5814 imposes a 25% penalty on the amount of any indemnity or medical-treatment payment that the employer or insurer unreasonably delays or refuses to pay. The §5814 California penalty is separate from and stacks with the §4650 automatic 10% self-imposed late-payment increase.
California Labor Code §5814 imposes a 25% penalty on the amount of any payment of compensation (temporary disability, permanent disability, life pension, death benefits, or medical-treatment payment) that the California employer or insurer unreasonably delays or refuses to pay. Under §5814, the California worker who has been unreasonably denied or delayed a comp payment files a Petition for Penalty before the WCAB judge; the judge determines whether the delay was unreasonable and, if so, awards 25% of the amount delayed as a penalty. The §5814 California penalty is intended to deter unreasonable claims-handling and compensate California workers for the harm caused by the delay.
Under California Labor Code §5814, California unreasonableness is decided case-by-case by the WCAB judge based on the facts surrounding the delay. The §5814 California test asks whether the California insurer or employer had a genuine, good-faith basis for the delay — for example, awaiting medical evidence, awaiting a specific procedural step under California Labor Code §4610 utilization review, or awaiting a California Labor Code §4062.1 or California Labor Code §4062.2 QME panel report. Delays without that good-faith basis are unreasonable under §5814 California. Common §5814 California delay scenarios include failure to start TD after the California California Labor Code §4650 14-day window, failure to pay PD after the worker reaches P&S, and failure to authorize approved medical treatment.
Under California Labor Code §5814 (25% penalty) and California Labor Code §4650 (14-day payment timing + automatic 10% self-imposed late-payment increase), the California penalties stack when both apply. The §4650 California 10% self-imposed late-payment increase is automatic and applies to every late payment without proof of unreasonableness — the California insurer simply adds 10% to a late payment as a built-in late fee. The §5814 California 25% penalty requires a separate showing of unreasonableness and a WCAB petition; when both apply, the California worker recovers the §4650 California 10% AND the §5814 California 25% on the same delayed payment. The two California frameworks are cumulative, not exclusive.
Under California Labor Code §5814, the California 25% penalty is calculated on the amount of the specific payment unreasonably delayed. The §5814 California rule means a $10,000 PD payment delayed unreasonably produces a $2,500 §5814 California penalty; a series of $500 TD payments delayed unreasonably across many weeks produces a cumulative §5814 California penalty equal to 25% of the total delayed weeks. The §5814 California penalty is paid by the California insurer in addition to the underlying payment itself; the California worker receives the full delayed amount PLUS the 25% penalty, often with the §4650 California 10% on top.
Under California Labor Code §5814, California Labor Code §4610 (utilization review), and California Labor Code §4610.5 (independent medical review), the California §5814 penalty does NOT apply when a treatment denial properly went through the §4610 California UR framework — the §4610 California UR process is the prescribed dispute mechanism for treatment requests, and a California §4610-compliant denial is not "unreasonable" within the meaning of §5814. The §5814 California penalty applies to indemnity delays and to medical-payment delays outside the §4610 California UR framework (e.g., refusing to pay for already-authorized treatment, or refusing to reimburse the California worker for out-of-pocket medical expenses).
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Tap to call →Last reviewed by Eman Yazdchi, Esq., May 2026.
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